Friday, April 16, 2021

Fb ran advertisements for a faux ‘Clubhouse for PC’ app planted with malware –


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Cybercriminals have taken out a lot of Fb advertisements masquerading as a Clubhouse app for PC customers as a way to goal unsuspecting victims with malware,


has realized.


was alerted Wednesday to Fb advertisements tied to a number of Fb pages impersonating Clubhouse, the drop-in audio chat app solely obtainable on iPhones. Clicking on the ad would open a faux Clubhouse web site, together with a mocked-up screenshot of what the non-existent PC app appears like, with a obtain hyperlink to the malicious app.

When opened, the malicious app tries to speak with a command and management server to acquire directions on what to do subsequent. One sandbox analysis of the malware confirmed the malicious app tried to contaminate the remoted machine with ransomware.

However in a single day, the faux Clubhouse web sites — which have been hosted in Russia — went offline. In doing so, the malware additionally stopped working. Guardicore’s Amit Serper, who examined the malware in a sandbox on Thursday, stated the malware obtained an error from the server and did nothing extra.

The faux web site was set as much as seem like Clubhouse’s actual web site, however that includes a malicious PC app. (Picture:



It’s not unusual for cybercriminals to tailor their malware campaigns to piggyback off the successes of wildly widespread apps. Clubhouse reportedly topped more than 8 million global downloads to date regardless of an invite-only launch. That top demand prompted a scramble to reverse-engineer the app to build bootleg versions of it to evade Clubhouse’s gated partitions, but additionally government censors the place the app is blocked.

Every of the Fb pages impersonating Clubhouse solely had a handful of likes, however have been nonetheless lively on the time of publication. When reached, Fb wouldn’t say what number of account homeowners had clicked on the advertisements pointing to the faux Clubhouse web sites.

At the least 9 advertisements have been positioned this week between Tuesday and Thursday. A number of of the advertisements stated Clubhouse “is now obtainable for PC,” whereas one other featured a photograph of co-founders Paul Davidson and Rohan Seth. Clubhouse didn’t return a request for remark.

The advertisements have been faraway from Facebook’s Ad Library, however we now have published a copy. It’s additionally not clear how the advertisements made it via Fb’s processes within the first place.


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